Patents by Inventor Christopher HEMERLY

Christopher HEMERLY has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for determining a shape of a mistuned blade of an impeller of a turbomachine
    Patent number: 12716718
    Abstract: A method for determining a shape of a mistuned blade of an impeller includes: providing a nominal blade with radially threaded-on profile elements; providing an initially mistuned blade with profile elements, the mistuned blade having a reduced or increased thickness at at least one of the profile elements compared with the nominal blade; determining the shape of the nominal blade in a hot state; determining the shape of the mistuned blade in the hot state; comparing the two shapes and determining a parameter of the mistuned blade which differs from the corresponding parameter for the nominal blade in the hot state; and changing the value of this parameter for the mistuned blade in the cold state such that the difference between the parameter for the mistuned blade and the nominal blade in the hot state no longer exists.
    Type: Grant
    Filed: January 26, 2024
    Date of Patent: August 25, 2026
    Assignee: ROLLS-ROYCE DEUTSCHLAND LTD & CO KG
    Inventors: Felix Figaschewsky, Thomas Giersch, Moritz Wirth, Jens Nipkau, Christopher Hemerly
  • METHOD FOR DETERMINING A SHAPE OF A MISTUNED BLADE OF AN IMPELLER OF A TURBOMACHINE
    Publication number: 20240263942
    Abstract: A method for determining a shape of a mistuned blade of an impeller includes: providing a nominal blade with radially threaded-on profile elements; providing an initially mistuned blade with profile elements, the mistuned blade having a reduced or increased thickness at at least one of the profile elements compared with the nominal blade; determining the shape of the nominal blade in a hot state; determining the shape of the mistuned blade in the hot state; comparing the two shapes and determining a parameter of the mistuned blade which differs from the corresponding parameter for the nominal blade in the hot state; and changing the value of this parameter for the mistuned blade in the cold state such that the difference between the parameter for the mistuned blade and the nominal blade in the hot state no longer exists.
    Type: Application
    Filed: January 26, 2024
    Publication date: August 8, 2024
    Inventors: Felix FIGASCHEWSKY, Thomas GIERSCH, Moritz WIRTH, Jens NIPKAU, Christopher HEMERLY